The Palestinian Authority government is based in the occupied West Bank, while Islamist movement Hamas rules the Gaza Strip.
New Palestinian government sworn in with Abbas loyalist at its helm.
President Mahmoud Abbas said he will send a delegation to Cairo, in two days, to follow up with the Palestinian reconciliation issue. He will run the ministries of interior and religious affairs until new appointees are named for the two posts.More news: Venezuela ex-spy chief fights extradition from Spain to US
Ishtayeh's Cabinet will convene for the first time on Monday.
Abbas's decision comes after forming a new government, which has ended the role of the national unity government, of which Hamas took part in its formation. He was also a member of the Palestinian negotiating team.
"We want to support the steadfastness of the Palestinian citizens, but that requires political support from the Palestinian leadership", said Melhem.More news: God of War - Thank You
During a meeting, the Palestinian president stressed "the Palestinian cause is passing through hard circumstances, but the Palestinian people and their leadership are on a level of responsibility".
Speaking to his new cabinet members, Abbas repeated his rejection of Trump's peace plan and said it was not useful to talk to Trump after he moved the USA embassy from Tel Aviv to Jerusalem and recognized the holy city as Israel's capital.
The United States congratulated the new Palestinian government on Sunday, a day after incoming Prime Minister Mohammad Shtayyeh announced his new cabinet alongside President Mahmud Abbas - leaving out Hamas.More news: World’s largest plane takes to the skies