The leaders of the Group of Seven industrialized countries released a statement Monday expressing "strong opposition" to massive land reclamation in disputed waters in the South China Sea and called for a thorough implementation of the cease-fire in Ukraine.

The G-7 leaders said they are concerned by the situation in the East and South China seas, although they stopped short of singling out China in referring to the reclamation work.

The leaders confirmed their commitment to adopting an agreement at the COP21 conference on climate change in December, with the goal of cutting greenhouse emissions by 2050 at the upper end of a U.N. panel-proposed range of 40 to 70 percent from 2010 levels.