Israeli troops are assembling on the Gaza border as they reportedly prepare for a ground invasion.Israel Defence Forces (IDF) spokesperson Jonathan Conricus said 300,000 army reservists are at the border along with artillery, preparing to “execute the mission that they have been given”.“That is to make sure that Hamas, at the end of this war, won’t have any military capabilities by which they can threaten or kill Israeli civilians.”Airstrikes continued to ravage neighbourhoods in Gaza overnight as Israel stepped up its offensive, with the military claiming troops have killed at least 1,000 Palestinian gunmen since the Hamas attack on Saturday. The military said more than 1,200 people have died in Israel, including 155 soldiers. In Gaza 900 people have been killed, including 260 children.