Poland is about to launch a major diplomatic offensive ahead of the upcoming NATO summit in Bucharest next month in order to convince Germany, France and Italy to drop their opposition to inviting Ukraine to join NATO`s Membership Action Plan (MAP) during the summit, sources in Warsaw and Kyiv said.

According to Warsaw Business Journal, Ukraine`s entry into NATO is seen by Warsaw as vitally important, but Berlin, Paris and Rome argue the country has yet to put in place civil control over the army, a prerequisite for joining MAP.