http://www.dailykos.com/stories/2017/3/3/1639775/-Campaign-advisor-changes-story-and-now-contradicts-Trump-says-Donald-ordered-Ukraine-change-at-RNC
"Members of the Trump campaign interfered with an RNC delegate proposal to attach language to the official Republican Party platform that would back Ukraine, militarily and otherwise, if Russia tried to invade. You can read the backstory here. It was the only issue the Trump campaign intervened on while delegates were voting on the party’s platform."