investment bank Lehman Brothers triggered a global economic recession.
Many observers believe Abe was making those comparisons to give him cover for delaying a planned increase in Japan's consumption tax - a move unsupported by leaders such as Germany's Angela Merkel, who is wary of public spending to boost growth.
G-7 leaders also called on North Korea to comply with U.N. regulations and cease all testing of nuclear weapons, missile launches and other "provocative actions."
The group condemned Russia's annexation of the Crimean peninsula from Ukraine, deeming it illegal. The G-7 leaders warned of "further restrictive measures" to raise the cost on Moscow, but added that sanctions could be lifted should Russia meet certain criteria, such as fully respecting Ukraine's sovereignty.
Without explicitly mentioning China, the final declaration promised its aid in settling heated territorial disputes in the South China Sea, where China has aggressively built up islands despite claims of neighboring countries.
Leaders of Britain, Canada, France, Germany, Italy, Japan and the United States convened over two days in central Japan for the annual G-7 summit.