By Eric Walsh
WASHINGTON (Reuters) - U.S. President Donald Trump and his Afghan counterpart discussed security in a phone call on Thursday, officials said, hours after the top U.S. commander in Afghanistan said thousands more troops were needed to break a stalemate with the Taliban.
Trump and Afghan President Ashraf Ghani also spoke about opportunities to strengthen ties, counterterrorism cooperation and economic development, the White House said in a statement.
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It said Trump also emphasized the continuing importance of the U.S.-Afghanistan Strategic Partnership and his support for Ghani's government, which is faced with an emboldened Taliban-led insurgency that is still gaining ground after more than 15 years of war.
The Afghan Embassy in Washington said Trump and Ghani had spoken on Dec. 3, but Thursday's call was their first since Trump's inauguration on Jan. 20.
Hours before the call, General John Nicholson, the commander of U.S. and international troops in Afghanistan, told the Senate Armed Services Committee in Washington he did not have enough troops to adequately advise Afghan forces on the ground.
Nicholson said he had enough U.S. troops to carry out counterterrorism operations against the Taliban, al Qaeda and other insurgents but also acknowledged gains made by the Taliban over the past year.
"We have a shortfall of a few thousand," Nicholson said.
Trump has so far offered little clarity about whether he might approve more forces for Afghanistan.
About 8,400 U.S. troops remain in Afghanistan, well down from their peak of about 100,000 in 2011.
Nicholson said extra forces need not all come from the United States and could also be drawn from other allies.
The focus of the NATO-led mission in Afghanistan has narrowed considerably to training Afghan forces and conducting counterterrorism missions since a significant drawdown began under Democratic former U.S. President Barack Obama.
Obama was often criticized by Republicans in Congress for focusing too much on driving down U.S. troop numbers in an attempt to force Afghan soldiers to become more self-sufficient.
Nicholson said U.S. Defense Secretary Jim Mattis would speak with allies soon and suggested Mattis might also visit Afghanistan, which might help him prepare his own recommendations for Republican Trump.
He also spoke of security in Afghanistan in terms of the often-difficult U.S. relationship with Pakistan, long seen as a haven for insurgents from the Taliban, the Haqqani network and other militant Islamist groups.
"Our complex relationship with Pakistan is best assessed through a holistic review," Nicholson said. Addressing U.S. concerns about Pakistan was at the top of his list of priorities with the Trump administration, he said.
The Afghan Embassy in Washington said Trump and Ghani had also discussed regional security issues, "as well as the joint fight against terrorism and countries that sponsor it."
It also said Trump said he planned to meet Ghani soon.
(This story has been refiled to say Afghan embassy, not U.S., in paragraph 4)
(Reporting by Eric Walsh; Additional reporting by Idrees Ali and Phil Stewart; Writing by Paul Tait; Editing by Sandra Maler and Michael Perry)