Ukrainian President Volodymyr Zelensky questioned whether his US counterpart Donald Trump was committed to NATO and European security in an address to the World Economic Forum in Davos on Tuesday.

“Will President Trump even notice Europe? Does he see NATO as necessary? And will he respect EU institutions?” Zelensky asked in the speech, which called for Europe to become more self-reliant.

Zelensky also said Europe should develop a joint defence policy and be willing to increase spending to ensure it can guarantee its own security.

“We need a united European security and defense policy,” the Ukrainian leader said, adding that, “all European countries must be willing to spend as much on security as is truly needed” and that “Europe must be able to guarantee peace and security for itself.”