BAGHDAD, Iraq (AP) -- Iraqi Prime Minister Nouri al-Maliki faced a widening revolt within his divided government as two senior Sunni politicians joined prominent Shiite lawmakers and Cabinet members in criticizing his policies.

Vice President Tariq al-Hashemi said he wanted to see al-Maliki's government gone and another "understanding" for a new coalition put in place with guarantees that ensure collective decision making. "There is a clear deterioration in security and everything is moving in the wrong direction," the Sunni leader told The Associated Press. "This situation must be redressed as soon as possible. If they continue, the country will plunge into civil war."

Al-Maliki's No. 2, Deputy Prime Minister Salam Zikam Ali al-Zubaie, also a Sunni, argued that the president's government failed to curb the spread of sectarian politics.

A boycott by 30 lawmakers and five Cabinet ministers loyal to anti-American Shiite cleric Muqtada al-Sadr was in protest of al-Maliki's meeting with President Bush in Jordan on Thursday. The Sadrists said the meeting amounted to an affront to the Iraqi people.

Al-Maliki appealed to the Sadrists to end their boycott and admonished them for an action that he said violated the commitment expected from partners in his 6-month-old coalition government. "I hope they reconsider their decision because it doesn't constitute a positive development in the political process," al-Maliki said at a news conference on his return to Baghdad. "Political partnership means commitment."

Meanwhile, in an interview with ABC, al-Maliki confidently claimed that his forces would be ready to take over responsibility for security in Iraq by June, a timeline that is about 12 months shorter than what has been floated by top U.S. military commanders.

"We and the President (Bush) agreed to keep the same (U.S.) forces on the ground but to train more Iraqi forces," he said, according to excerpts from the interview to be aired later Thursday.

"We did not talk about any timetables and agenda for the withdrawal but now we are focusing on training Iraqi forces and then we will talk about reducing the number of multinationals," he said, alluding to the U.S.-led, 150,000-strong multinational force in Iraq.

He said he had no objection to any timetable for a U.S. troop withdrawal, but cautioned that such action should be put off until Iraqi forces were ready to stand on their own.