ivo dalder, the u.s. ambassador to ukraine, now leads the council on global affairs, he joins us, ambassador welcome back to "inside story." >> great to be here. >> you authored a report mr. ambassador what should the united states and nato do now? >> i think the united states and nato countries should now be providing lethal defensive and i stress defensive military aid to ukraine. clearly the kind of support that russia has been providing to the ukrainian separatists over the past few months and with an accelerating level of supply that has been coming over the border in the past few weeks there is a need for ukraine to be helped. we set out to go to ukraine to find out what the situation was on the ground and to see what kind of defensive equipment might be necessary to help ukraine so that not for ukraine to win a war or to escalate this fight but in order to make the separatists think twice about escalating and for mr. putin to think twice to escalate so we can look to a different kind of solution, a