Activists aboard a flotilla attempting to break Israel's naval blockade and deliver aid to Gaza say they are back on course after a reported confrontation with an Israeli warship early on Wednesday. The Global Sumud Flotilla (GSF) says that one of its lead vessels, Alma, was "aggressively circled" by an Israeli warship for several minutes, and on board communications were cut off during the incident, News.Az reports citing BBC. The Israeli boat forced Alma's captain to take evasive manoeuvres, activists say, before the same vessel repeated what activists described as "harassing manoeuvres" on another boat. It has already blocked two attempts by activists to deliver aid by ship to Gaza, in June and July. Lisi Proenca, who is on Sirius – the second GSF ship involved – said the Israeli vessel circled for about 15 minutes and that their communications were also affected.