Strong backing from developing countries is likely to be enough to get the "Group of Four" nations over the top in their effort to expand the U.N. Security Council, according to Germany's ambassador to Japan, Henrik Schmiegelow.

Tension is increasing at U.N. Headquarters in New York as Japan, Germany, India and Brazil — all aspiring to become permanent members of the Security Council — look for the right time to submit their revised resolution to the General Assembly.

"An increasing number of developing countries have begun to realize how the G4 resolution would give them an epoch-making opportunity," Schmiegelow said in a lecture Saturday at Aoyama Gakuin University cosponsored by The Japan Times.