Ukraine launched an offer to investors to swap $3.2 billion of complex and costly GDP warrants for international bonds on Monday, the government said, as it attempts to clear a major remaining hurdle in its push to emerge from sovereign default.

Zelensky didn't reveal much detail about an updated plan, although he said there needed to be more investment for drones.

The attack came as U.S. officials were expected to hold peace talks with Ukrainian and Russian officials in the coming days.

The U.S.’s latest efforts to end the conflict between Ukraine and Russia have jolted the trans-Atlantic alliance.