(Reuters) - The U.S military bases in Kandahar and Jalalabad are likely to remain open beyond the end of 2015, a senior U.S official said, as Washington considers slowing its military pull-out from Afghanistan to help the new government fight the Taliban.

The anticipated policy reversal reflects the U.S embrace of Afghanistan's new and more cooperative president, Ashraf Ghani, and a desire to avoid the kind of collapse of local security forces that occurred in Iraq after the U.S pull-out there.

It coincides with new efforts backed by Pakistan and China for peace talks between the Afghan government and the Taliban. Wa

The U.S official said conditions had changed since May when President Barack Obamadeclared that by the end of 2015 the U.S force would be roughly halved from the current total of about 10,000 and would operate only from bases in Kabul and Bagram.

The White House had no immediate comment on the possibility of maintaining the Kandahar and Jalalabad bases into next year.

Obama is expected to decide in the next few days whether to slow the pace of the U.S troop withdrawal, possibly by next week when Ghani and Afghan Chief Executive Abdullah Abdullah travel to Washington.

U.S officials hope the visit will garner American public support for a longer military mission and display a contrast to their prickly dealings with former president Hamid Karzai.

Ghani is getting a warm welcome. He meets the secretaries of state, defense and treasury at the Camp David presidential retreat on Monday, lunches with Obama at the White House on Tuesday, and speaks to a joint session of Congress on Wednesday.