Banning Russia from SWIFT would be a strong sanction that will definitely hurt Russia. It seems that all the European countries that opposed removing Russia from SWIFT before are changing their minds right now. It could be that already next week all countries will agree to the new sanctions. As for NATO to enter Ukraine, I don't think there is any chance for this.  Ukraine could use the help of NATO fighters to help get air superiority. But Russia is a nuclear power and stated publicly they would attack anybody who will intervene in the war. The western world can only send more weapons, ammunition, financial aid and other support equipment. Sending official soldiers is not an option at the moment. I hope Ukraine can hold out.