Now playing
02:28
Business opportunity in Saudi Arabia in doubt
minutocnn khashoggi trump 2020 mh17 crisis migratoria marta futbol pkg digital original _00000000.jpg
minutocnn khashoggi trump 2020 mh17 crisis migratoria marta futbol pkg digital original _00000000.jpg
Now playing
02:49
UN official: Saudi Arabia responsible for Khashoggi's murder
jamal khashoggi carrera censura corte real principe mohammed bin salman periodista obituario pkg_00000710.jpg
jamal khashoggi carrera censura corte real principe mohammed bin salman periodista obituario pkg_00000710.jpg
Now playing
04:45
What happened to Jamal Khashoggi?: A timeline
Now playing
03:52
Khashoggi messages reveal sharp criticism of MBS
PHOTO: AFP/Getty Images
Now playing
02:10
Who does Trump believe in journalist's death?
PHOTO: Future Investment Initative
Now playing
02:01
Saudi Crown Prince comments on Khashoggi
PHOTO: CNNI
Now playing
02:22
Turkish President addresses Khashoggi murder
PHOTO: TRT WORLD
Now playing
05:09
Trump calls out 'deception' in Khashoggi probe
Saudi FM
Saudi FM
PHOTO: Fox News
Now playing
01:55
Saudi FM: Khashoggi death a rogue operation
PHOTO: CNN/Pool
Now playing
02:33
Pompeo: Even Saudi royal family is accountable
Now playing
07:45
Sons of slain Saudi journalist speak to CNN
A general manager of Alarab TV, Jamal Khashoggi, looks on during a press conference in the Bahraini capital Manama, on December 15, 2014. The  pan-Arab satellite news broadcaster owned by billionaire Saudi businessman Alwaleed bin Talal will go on air February 1, promising to "break the mould" in a crowded field.AFP PHOTO/ MOHAMMED AL-SHAIKH        (Photo credit should read MOHAMMED AL-SHAIKH/AFP/Getty Images)
A general manager of Alarab TV, Jamal Khashoggi, looks on during a press conference in the Bahraini capital Manama, on December 15, 2014. The pan-Arab satellite news broadcaster owned by billionaire Saudi businessman Alwaleed bin Talal will go on air February 1, promising to "break the mould" in a crowded field.AFP PHOTO/ MOHAMMED AL-SHAIKH (Photo credit should read MOHAMMED AL-SHAIKH/AFP/Getty Images)
PHOTO: MOHAMMED AL-SHAIKH/AFP/Getty Images
Now playing
00:42
Turkish official: Khashoggi's body was cut into pieces
Missing Saudi Journalist Jamal Khashoggi with his fiance Hatice Cengiz
Missing Saudi Journalist Jamal Khashoggi with his fiance Hatice Cengiz
PHOTO: Hatice Cengiz
Now playing
01:27
Friend: Khashoggi's fiancé asked me to pray
PHOTO: CNN
Now playing
07:42
Jamal Khashoggi's editor speaks out
PHOTO: CNN/TRT World
Now playing
00:44
Trump: Saudi King denies knowledge of Khashoggi
(CNN Business) —  

Saudi Arabia’s investment conference opened on Tuesday with a dearth of big name speakers and a fleeting appearance by its sponsor, Crown Prince Mohammed bin Salman.

Dozens of top business leaders from around the world had pulled out of the Future Investment Initiative as questions mounted over the Saudi government’s role in the killing of journalist Jamal Khashoggi, who disappeared after entering the Saudi consulate in Istanbul.

Speaking to CNN Business at the conference, the head of Saudi oil company Aramco, Amin Nasser, said “everyone here feels sorry” about Khashoggi’s death but the kingdom was pushing ahead with its investment plans. He said $50 billion worth of deals were signed on the first day of the event, which runs through Thursday.

“We feel sorry for his family and what happened, but at the end of day you know, we need to move beyond that,” Nasser told CNN Business’ Emerging Markets Editor John Defterios.

“A lot of our partners are here. The ones we are doing business with are here,” Nasser said.

Still, the exodus of top executives — including the CEOs of JPMorgan Chase (JPM), Uber and Siemens (SIEGY) — has taken the shine off the showcase event hosted by bin Salman, who has been trying to modernize the country’s oil-dependent economy.

The prince, who has poured Saudi money into tech companies around the world and hung out with Silicon Valley’s biggest names, is now grappling with the international outcry over what happened to Khashoggi.

Many senior officials and top executives have pulled out of this year
Many senior officials and top executives have pulled out of this year's conference.
PHOTO: FAYEZ NURELDINE/AFP/Getty Images

Members of bin Salman’s inner circle have been blamed for the Washington Post columnist’s death. The Saudi government, which had initially claimed Khashoggi left the consulate alive, has since admitted he was killed inside the building but insisted it was a “tremendous mistake” and the result of a “fistfight.”

That explanation has drawn skepticism, including from US President Donald Trump who said Monday he was “not satisfied” with what he’d heard.

The prince arrived at the conference in the late afternoon and spent about 15 minutes listening to a session about Formula E motor racing, which is coming to Saudi Arabia in December.

Last year, bin Salman participated in a panel discussion about the futuristic NEOM city — a flagship project in his Vision 2030 program of modernization. On Tuesday, he didn’t speak and his star guest of 2017 — global tech investor Masayoshi Son of SoftBank (SFTBF) — was nowhere to be seen.

Total in, Siemens out

Organizers of the Riyadh conference, widely known as “Davos in the desert,” had hoped it would be business as usual despite the loss of so many top names, including US Treasury Secretary Steven Mnuchin, the CEOs of HSBC (HSBC) and Blackrock (BLK), and International Monetary Fund chief Christine Lagarde.

Heads of state from Pakistan, Senegal, and Gabon as well as Arab states were at the event, plus a delegation of Russian entrepreneurs, executives and officials.

“We have a big delegation from Russia and our friends from China are also here. Everybody is very excited about Saudi,” said Kirill Dmitriev, chief executive of The Russian Direct Investment Fund, a sovereign wealth fund.

One of the highest profile CEOs still attending was Patrick Pouyanné, the chief of French oil company Total (TOT).

“Why wouldn’t I be here. We are business partners and we support the Saudi people,” he told CNN Business at the conference.

“I am convinced that an ‘empty chairs at the table’ strategy serves no useful purpose, especially when it comes to respect for human rights,” Pouyanné said earlier in a statement.

His comments contrasted with those of Siemens CEO Joe Kaeser, who explained in a LinkedIn post why he eventually decided to pull out of the conference.

“As soon as I heard of his death, it was clear to me that we couldn’t simply move on and do business as usual,” he wrote. “We in Germany should know from our history what it can lead to if people stay out of trouble and don’t speak up till it is too late.”

Deals worth $50 billion

The lack of big names didn’t stop the Saudis doing business at the conference. Aramco said it alone signed memorandums of understanding worth $34 billion with companies from around the world including Halliburton (HAL), Baker Hughes (BHGE), Schlumberger (SLB), Total, and Sumitomo (SSUMF).

Deals worth another $16 billion were done in other sectors of the economy, Aramco CEO Nasser said.

Companies such as JPMorgan and HSBC sent less senior executives, despite their CEOs withdrawing. The head of Morgan Stanley’s (MS) international business, Franck Petitgas, was also listed as a speaker.

American and European businesses want to keep channels of communication open amid the outcry over Khashoggi’s killing.

Some of them have pointed to ties to the Saudi government dating back decades and their large numbers of employees in the kingdom.

Business links to Saudi Arabia are particularly strong among companies in the energy and weapons industries. The CEO of defense contractor Raytheon (RTN), Thomas Kennedy, is still listed as a speaker at the event.

Jethro Mullen contributed to this report.