Germany plans to expand its armed forces to at least 260,000 active soldiers and 200,000 reservists by 2035.
The talks are expected to focus on the consequences of Mr Trump’s victory.
The U.S. is Israel’s main backer, but President Joe Biden threatened to restrict supplies further if Prime Minister Benjamin Netanyahu goes ahead with a major offensive.
The U.S. secretary of defence, Lloyd Austin, has promised continued international support to Ukraine in the war against Russia.
Chancellor Olaf Scholz has criticised the debate in recent weeks about German support for Ukraine and the delivery of Taurus cruise missiles in particular.
