By Nidal al-Mughrabi and Maayan Lubell GAZA/JERUSALEM (Reuters) - Israel's military pounded targets in the Gaza Strip on Tuesday after Prime Minister Benjamin Netanyahu said his country should prepare for a long conflict in the Palestinian enclave, squashing any hopes of a swift end to 22 days of fighting. Gaza residents reported heavy Israeli bombing in Gaza City. Israeli aircraft fired a missile at the house of Hamas Gaza leader Ismail Haniyeh and flattened it before dawn, causing damage but no casualties, Gaza's interior ministry said. The Israeli military said five soldiers were killed in a battle with militants who crossed into Israel via a tunnel near the community of Nahal Oz, close to the Gaza border.

The United States has found that Russia violated a 1987 arms control treaty by testing a ground-launched cruise missile, a senior US official said late Monday, calling the matter "very serious." The announcement adds a new dispute at a time of already heightened tensions between Washington and the Kremlin over the crisis in Ukraine, with western countries accusing Russia of arming Ukrainian separatists and destabilizing the country. The US concluded in a 2014 report that Russia had violated the Intermediate-Range Nuclear Forces Treaty, which barred it from possessing, producing or flight-testing such cruise missiles with a range of 500 to 5,500 kilometers, the official told AFP.