Iran insists its nuclear programme is peaceful in purpose.

BBC: Natanz uranium enrichment plant

The whole point of embassies and diplomatic facilities, the purpose behind them is to allow for the peaceful interaction between nations to build relationships, build partnerships, and to avoid conflict.

WHITEHOUSE: Press Briefing

Let me step back and talk about what I think our mission has to be in the Middle East and even more broadly -- because our purpose is to make sure the world is more -- is peaceful.

WHITEHOUSE: The White House