Kiev, Ukraine( CNN) The setting was a Manhattan restaurant, and after 25 minutes what allegedly emerged was a pro-Russian peace plan for Ukraine that its author believes may have ended up in the White House.

In a CNN interview, Ukrainian lawmaker Andrii Artemenko said he discussed his left-field proposal for Ukraine in January with US President Donald Trump's personal lawyer, Michael Cohen, who offered to deliver the plan to the Trump administration.

The exact details of the plan are unclear, yet reports have suggested it revolves around leasing Crimea — annexed by Russia from Ukraine in 2014 — to Moscow for 50 to 100 years. In exchange, Russia would withdraw its troops from the separatist regions in Ukraine's war-torn east.