In July Šušak made another trip to Washington and again expressed the idea of a military attack on the RSK. On 11 July the Army of Republika Srpska captured Srebrenica. By the end of the month fighting in the Bihać pocket escalated. Tuđman signed with Izetbegović the Split Agreement on mutual defence. The joint HV and HVO forces started the Operation Summer '95 in western Bosnia and isolated Knin from Republika Srpska.