with open arms. Now he is going to be shunned. That´ll be hard to swallow," said John Malott, a former US ambassador to Malaysia.Both Najib and the government-owned company, 1Malaysia Development Berhad (1MDB), whose advisory board he chairs, deny that the firm´s funds were diverted to his accounts.
He alleges a conspiracy to unseat him, increasingly blaming Mahathir Mohamad, Malaysia´s no-nonsense leader from 1981-2003 who has bitterly split with Najib over recent ruling-party election setbacks.
The government calls deposits to Najib´s accounts "political donations" from unspecified Middle Eastern sources. Mahathir has called that "absurd".
Neither Najib nor 1MDB responded to requests for comment.
The scandal has provided fresh ammunition to critics who accuse the ruling United Malays National Organisation (UMNO) of corruption, abuse of power, and a culture of impunity, which the opposition says has worsened under Najib.
Najib took office in 2009 already tainted by an earlier scandal over alleged kickbacks from French submarine purchases when he was defence minister.
The case, never fully investigated, also involved the mysterious murder by his bodyguards of a Mongolian woman linked to the deals. Najib denies any wrongdoing.
Malott said one 1MDB casualty could be the warming relationship between Najib and US President Barack Obama, who has touted Malaysia as a key partner in regional issues, including South China Sea security.
The pair famously bonded over a round of golf last December in Hawaii, but a more aloof Obama will attend a coming regional summit in November hosted by Najib, Malott said.
"For sure, there won´t be any golf games in November," he said.
Najib and his government may also find it harder to conduct overseas financial business, said Jason Sharman, an expert on money laundering with Australia´s Griffith University."You can be sure banks around the world are adjusting their exposure to Najib and those associated with him," he said, adding they would not want to be liable for any claims of money laundering down the line. Sharman added that Najib´s acceptance of questionable money into his personal accounts was "not the most clever thing to do."
Najib, who earlier sacked his deputy premier and attorney-general, continues to move against his critics. On Friday, police arrested a former UMNO official, Khairuddin Abu Hassan, who has met regulators in various countries to push for investigations. He has been charged with seeking to undermine the government. But the damage is already done, said Tony Pua, an opposition parliamentarian who has crusaded to expose the scandal.