I think that we as Christians should not support our government's decisions to unlawfully attack sovereign nations.
Be it Iraq, Afghanistan, Syria, Libya, Somalia, Yemen, etc. we must recognise that our governments do not hold good intentions in their actions, they lie and deceive… They wish for nothing but discord, to destroy other countries and replace their leaders with neo-colonial regimes.
Though we do have a duty to support the governments that are resisting, that wish for unity and peace. We must support Russia, and we especially support Assad.
Assad is maintaining a secular Syria, where All religions can live equally and in peace. He is fighting the foreign terrorists seeking to destroy, and he is defending the Christians of Syria.