Image provided by Venezuela's Presidency shows Venezuela's acting President Nicolas Maduro (R) visiting the military high command in Caracas, capital of Venezuela, on March 13, 2013. (Xinhua)

Image provided by Venezuela's Presidency shows Venezuela's acting President Nicolas Maduro (L) visiting the military high command in Caracas, capital of Venezuela, on March 13, 2013. (Xinhua)

Image provided by Venezuela's Presidency shows Venezuela's acting President Nicolas Maduro (C) visiting the military high command in Caracas, capital of Venezuela, on March 13, 2013. (Xinhua)