Russian leader Vladmir Putin sent in troops and tanks to invade neighboring Ukraine and the Obama administration is coming to the rescue with . . . selfies! State Department spokeswoman Jen Psaki was mocked Thursday after posting a photo of herself on Twitter holding a sign that read #UnitedÂForÂUkraine @StateÂDeptÂSpox.” Psaki, who has worked closely with President Obama since his 2008 campaign and is the chief communications adviser to Secretary of State John Kerry, is smiling and giving a thumbs-up in the photo. But the cheerleading for beleaguered Ukraine wasnÂ’t trending or scaring off bully Putin, said critics in the blogosphere. “Presenting...