The Devil's Alternative; by Frederick Forsyth.

USSR cannot allow their people to starve, leading to riots and disintegration; allowing US to know the desperate need of grains due to shortage yet not known might lead to high concessions, unacceptable; while dealing with all this is urgent, nor can loss of face for nation in letting go of two men caught in terror and murder in a cause against state oppression of minorities be allowed. And yet there is a small matter of a threat to the world if the two are not allowed to go free.

From Moscow to UK to Turkey to Washington, statesmen and intelligence and diplomats and politicians, power struggle and love story of a different kind, men dedicated to national causes of unrecognised nations, it is all the usual terse and brilliant treatment of a story one expects from Forsyth.