G7 finance officials are struggling with how to use revenue from frozen Russian assets to aid Ukraine.

Technical and legal challenges remain unresolved.

Options include using profits as collateral for a loan to Kiev or directly allocating funds to President Zelensky.

Legal concerns and potential repercussions complicate progress.

Russia has warned against targeting its assets and threatened retaliation.

The US proposed a $50 billion loan facility for Ukraine, facing resistance from European members.

Decisions are expected at the upcoming June summit.

President Putin signed a decree allowing Moscow to seize US-linked property in response to potential asset confiscation.