U.S. announces $300 million in new military aid for Ukraine

State of play: The new package includes $300 million in weapons and equipment that will "address some of Ukraine's pressing needs," White House national security adviser Jake Sullivan said at a press briefing Tuesday.

• The new package was made possible by cost savings from Defense Department contracts to replace equipment sent to Ukraine in previous drawdowns that came in under budget.

Between the lines: "This ammunition will keep Ukraine's guns firing for a period, but only a short period. It is nowhere near enough to meet Ukraine's battlefield needs, and it will not prevent Ukraine from running out of ammunition in the weeks to come," Sullivan said.

• There is still a "critical need" for Congress to pass the national security supplemental, he added.

The big picture: While the Biden administration has repeatedly pushed for Congress to pass more Ukraine aid, opposition to sending more assistance to Ukraine has grown among Republicans in Congress in recent months.

• While the Senate passed a $95 billion foreign aid package in February that includes aid for Ukraine, the bill faces a tough road ahead in the House.
• Further delays in passing the package would be "nothing short of a gift to Putin, Iran and other adversaries," Treasury Secretary Janet Yellen warned earlier this month.