Gingrich , Graham : U.S. has protested but has n't gone beyond symbolic measures . They say Eastern Europe 's meeting with American leader and Gingrich , Graham 's condemnation are n't sufficient . Authors : Ukraine should have accepted U.S. 's emergency request for military aid . They say it is crucial to send a message that the U.S. will respond strongly to aggression .
Gingrich , Graham : U.S. has protested but has n't gone beyond symbolic measures . They say Obama 's meeting with Ukrainian leader and Kerry 's condemnation are n't sufficient . Authors : U.S. should have accepted Ukraine 's emergency request for military aid . They say it is crucial to send a message that the U.S. will respond strongly to aggression .