ASPEN, Colo. (AP) — Ukraine is on its way to being able to “stand on its own feet” militarily, Secretary of State Antony Blinken said Friday, noting that more than 20 other countries have pledged to maintain their own military and financial aid to the country even if the U.S. were to withdraw its support under a different president.

Blinken for the first time directly addressed the possibility that former President Donald Trump could win the November election and back away from commitments to Ukraine. The U.S., under President Joe Biden, has been the most important supporter of Ukraine’s more than two-year battle against invading Russian forces.

Trump’s public comments have varied between criticizing U.S. backing for Ukraine’s defense and supporting it, while his running mate, Sen. JD Vance, has been a leader of Republican efforts to block what have been billions in U.S. military and financial assistance to Ukraine since Russia invaded in 2022.

Concerns among Ukraine and its supporters that the country could lose vital U.S. support have increased as Trump’s campaign surges and Biden’s falters.

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Blinken said Friday that any new administration would have to take into account strong bipartisan backing in Congress for Ukraine in the interests of countering Russian President Vladimir Putin’s attempts to expand Moscow’s territory and influence.

“Every administration has an opportunity, of course, to set its own policy. We can’t lock in the future,” Blinken said, speaking to an audience of U.S. policymakers and others at the Aspen Security Forum in Colorado.

But he pointed to the security agreements that the United States and more than 20 other allies — including some NATO partners, Japan and the European Union — signed at a NATO summit in Washington this month.

“Were we to renege on that ... I suppose that’s possible, but happily we’ve got another 20 some-odd countries that are doing the same thing,” Blinken said.

Ukraine itself was on a trajectory to ensure it “stands on its own feet militarily, economically, democratically,” Blinken said.