G7 leaders back 2015 climate deal, aim to build on US momentum
* G7 pledges to complement EU energy security plan
* European Commission links energy security, climate debate
* U.S. goals face domestic political opposition
* European Union struggling to convince Poland
By Barbara Lewis
BRUSSELS, June 5 (Reuters) - The world's leading industrialised nations gave their backing on Thursday to a new global deal on climate change in 2015 after promises from the United States at the start of the week galvanised flagging momentum.
The United States' plan to cut emissions from power plants by 30 percent by 2030, which will run into domestic opposition, prompted the European Union into a defence of its own record.
China, the world's biggest emitter of greenhouse gases, also gave a hint that it would set some kind of cap on its emissions.
A draft of the G7 communique seen by Reuters said the leaders affirmed their "strong determination" to adopt a new global deal in 2015 that is "ambitious, inclusive and reflects changing global circumstances". Continued...