Jordan's Prime Minister Bisher Khasawneh submitted his resignation on Sunday less than week after a parliamentary election that saw some gains for the opposition.
Jaafar Hassan, now head of King Abdullah's office and a former planning minister, is expected to replace Khasawneh, a veteran diplomat and former palace advisor who was appointed nearly four years ago, the officials told Reuters on condition of anonymity.
Hassan will face the challenges of mitigating the impact of the Gaza war on the kingdom's economy, hard hit by curbs to investment and a sharp drop in tourism.
The outgoing prime minister had sought to push reforms pushed by King Abdullah to help reverse a decade of sluggish growth hovering at around two per cent that was worsened by the pandemic and conflict in neighbouring Iraq and Syria.
The Muslim Brotherhood opposition and ideological allies of Hamas made significant gains in Tuesday's election, boosted by anger over Israel's war in Gaza.
The new composition of the 138 member parliament retains a pro-government majority, but a more vocal Islamist-led opposition could challenge IMF-led free-market reforms and foreign policy.
Israel and Iran attacked each other for a fifth straight day on Tuesday, and US President Donald Trump urged Iranians to evacuate Tehran, citing what he said was the country's rejection of a deal to curb nuclear weapons development.
Israeli tank shellfire killed at least 51 Palestinians on Tuesday as they awaited aid trucks in Khan Younis in the southern Gaza Strip, the territory's health ministry said, adding that dozens of others were wounded.
Russia launched hundreds of drones and dozens of missilesat Ukraine on Tuesday,hitting dozens of civilian targets in Kyiv including a large apartment block, killing at least 15 people and wounding scores, Ukrainian officials said.
US President Donald Trump left the Group of Seven summit in Canada a day early due to the situation in the Middle East, the White House said on Monday.
The U.S. military has moved a large number of refueling aircraft to Europe to provide options to President Donald Trump as Middle East tensions erupt into conflict between Iran and Israel, two U.S. officials told Reuters on Monday, speaking on condition of anonymity.