Russian President Vladimir Putin has urged Iran to avoid targeting civilians in its anticipated retaliation against Israel for the assassination of Hamas leader Ismail Haniyeh in Tehran. Despite this call for restraint, Russia has begun delivering advanced radar and air defense systems to Iran, including potentially the S-400 Triumf system. This move comes amid heightened tensions in the Middle East, with Hezbollah also threatening attacks on Israel. The Kremlin's National Security Secretary Sergei Shoigu conveyed Putin's message to Iran during a visit to Tehran, while the Organization of Islamic Cooperation has condemned the killing of Haniyeh. The situation has prompted the US to deploy additional military assets to the region and urge diplomatic pressure on Iran to prevent an all-out war.