 A radical security review and greater cross-border co-operation were discussed with the new British Prime Minister, Margaret Thatcher.These discussions led Síle de Valera, a backbench TD, to directly challenge the leadership in a speech at the Liam Lynch commemoration at Fermoy, County Cork, on 9 September.Although Lynch quickly tried to impose party discipline, attempting to discipline her for opposing party policy at a parliamentary party meeting held at 28 September, de Valera correctly pointed out that she had not opposed the party policy regarding the North which called for the declaration of the British intent to withdraw from the north.