 Complete the following phrase:  On 20 Nov 1941 Hudson was present at chetnik-partisan negotiations in Čačak, reporting that partisans are stronger and have no confidence in Yugoslav officers who were responsible for the collapse. He also stated that Mihailović would first liquidate partisans with British arms, before turning seriously to the Germans. Shortly afterwards, he left Mihailovićs HQ to visit Tito at Užice, just as the Germans had attacked the city in 