Dilma Rousseff's snub of Obama not the first snag in relations with US
State dinner at White House for Brazilian leader falls victim to row over Edward Snowden's revelation of US espionage, despite bid to placate her

For the first time since Barack Obama took office, a year of his presidency is likely to end without him toasting an ally at a glitzy White House state dinner.

It's the only state dinner the White House had announced for 2013. And, coming so late on the calendar, it's unlikely that another will be scheduled before the year ends.
To many analysts, it was a sense of déjà vu. Every time Brazil and the US get to the altar, the roof of the church seems to collapse.
In 1982, then-US president Ronald Reagan travelled to Brazil for a dinner banquet meant to herald a new era in ties between the Americas' two biggest countries. But when Reagan raised his wine glass and toasted "the people of Bolivia", it seemed to confirm his hosts' worst fears that the US saw Brazil as just another poor country in its so-called backyard.
Last week, hopes for a breakthrough fell apart once again, in even more dramatic fashion.