Training will take place at Fort Sill in Oklahoma where the US conducts its own training on operating and maintaining the air defense system, sources say

The Ukrainians are set to begin training on the Patriot missile system in the United States as soon as next week, two US officials familiar with the matter tell CNN.

The Ukrainians are set to begin training on the Patriot missile system in the United States as soon as next week, two US officials familiar with the matter tell CNN.