More than four years after Russia invaded Ukraine, there have been several developments in Ukraine's favor. President Trump, who has vacilated on his support of Ukraine, said he would sell Patriot missile technology to Ukraine. Ukraine has started an effective strategy of targeting fuel tankers Russia relies on to supply its army, and drones have targeted oil refineries and fuel depots. In the past days, a senatorial delegation traveled to Ukraine to discussion strengthening Ukraine's air defenses and further sanctions on Russia.