Allies push for F-16s to be sent to Ukraine amidst pressure and controversy.

The Biden administration is facing increased pressure to approve the transfer of F-16s to Ukraine, with friendly European governments, U.S. lawmakers, and Ukrainian leadership advocating for the warplanes. While the administration has approved other military aid, it is holding the line on F-16s for now. However, momentum may be building for Washington to allow other countries that fly the F-16 to send their own jets to Ukraine. The issue is expected to be discussed at the G-7 gathering in Japan this week and at NATO's annual leaders summit in Lithuania in July.