German Chancellor Olaf Scholz will meet with U.S. President Joe Biden in Washington on Friday to discuss the Ukrainian crisis amid worries that China may arm Russia as its invasion enters its second year.

Late Thursday, Scholz began the one-day journey without a press delegation.

A senior U.S. source said Biden and Scholz would meet for an hour at the White House, including a large “one-on-one component,” to “share notes” on their recent discussions with Ukrainian President Volodymyr Zelenskiy and the fighting.

“Both of the leaders wanted this to be a working-level meeting,” the official added.

Officials indicated the call for Western help for Ukrainian soldiers prepared for a new Russian attack would be a significant subject. During Scholz’s visit, officials stated that Washington would unveil a $400 million military aid package for Kyiv.

His first visit to Washington since the invasion comes days after Biden’s security advisor, Jake Sullivan, told ABC that Biden overrode his military’s recommendation and sent Abrams tanks to Ukraine because Scholz set it a pre-condition for providing German Leopards. Berlin says Biden realized it was essential and agreed.

According to four U.S. officials and other sources, the German leader arrives as the US is consulting close allies about sanctioning China if Beijing publicly supports Moscow for its war in Ukraine.

Nonetheless, U.S. authorities said they are constantly watching the situation.

Germany, its largest economic partner, has suggested China might help bring peace, something many China analysts doubt.

Another senior U.S. official denied major tensions between Washington and Berlin.

“The bond is rock-solid,” the official stated. “Tomorrow’s discussion will mostly focus on what we are doing jointly to help Ukraine—a indication of the solid footing the partnership continues to be on.”

Scholz’s Thursday statement to parliament urging China not to arm Moscow and to persuade Russia to withdraw its soldiers was well received by U.S. officials.

“U.S. policymakers have a chronic concern that industrial European powerhouses like Germany will allow their commercial interests in China to temper their willingness to take tough positions on security and geopolitical issues,” said Daniel Russel, the top U.S. diplomat for East Asia under President Barack Obama and now with the Asia Society.

“The Biden administration will exploit the Scholz visit to move Germany’s balance toward tougher pushback.”