As the first paragraph of the article shows, the issue at hand was the legality of the war:
‘Tony Blair will be quizzed over a devastating official memo warning him that war on Iraq would be illegal eight months before he sent troops into Baghdad, it was claimed last night.’
While it would be possible to stress the word war, the effect would be to contrast it with something else, for example occupation. This is known as contrastive stress. But as we can see from the article, there was no such intended contrast.