WARILY, yet with a trace of hope, the two opposing power blocs in Europe probed each other last week, seeking out possible areas of cooperation. In Brussels, the foreign and defense ministers of the 15 NATO members were gathered for their annual review. In Moscow, the political leaders of the seven Warsaw Pact nations were holding a meeting of their own. In each capital, the conferees followed their rivals' proceedings with lively interest.
Unlike the situation in years past, the prime order of business at the two meetings was not to raise more divisions or discuss new weaponry. The conferences were held...