Facebook said the majority of that was to pay for flights on private jets, which are seen as necessary for security reasons.

The E-7A Wedgetail equipped with advanced radar will be deployed "in the near future" to monitor the crowded skies over the zone.

“Vulnerable religious minorities deserve more than just piecemeal returns of their stolen religious properties,” stated Chairman Royce.

“If you live in a closed market like the Japanese defense industry does, you clearly lag behind in technological development,” Heigo Sato said.

The ministers are expected to look at options including situating military bases in the Baltic states to reassure members in Eastern Europe.