If you are at war with an AI and don't want the senator to force you into a peace treaty, you can try to place bombers in front of occupied cities to block enemy units so that they cannot talk to you. This method will be a lot easier to implement if the AI civ does not have the techs for getting partisans when you occupy its cities.
Actually bombers do not need to go back to cities every other turn. If you have enough engineers, you can fly the bombers to their targets, then build an airbase under the bombers, then order the bombers to attack. This way the bombers can keep going until battle damage makes them too weak to attack again. Before the AI can get fighters, this is the best way to wage a war -- almost no casualties.
Actually bombers do not need to go back to cities every other turn. If you have enough engineers, you can fly the bombers to their targets, then build an airbase under the bombers, then order the bombers to attack. This way the bombers can keep going until battle damage makes them too weak to attack again. Before the AI can get fighters, this is the best way to wage a war -- almost no casualties.