>> reporter: president obama and the national security team worked through the weekend on the ukraine situation, the president taking calls with the leaders of six countries, including russia. and now the administration is sending secretary of state john kerry to ukraine tonight to meet with leaders of the new government and pledge u.s. support, including financially. a senior administration official made it very clear that in their words russia has badly miscalculated. sending troops to crimea was a terrible choice that will only leave russia severely isolated if this continues. the u.s. has suspended upcoming trade talks with russia. kate? >> what's the discussion going about what could possibly happen here. let's bring in ohio congresswoman marcy captor and we have former u.s. ambassador to nato mr. nicholas burns.