Last week's Paris killings have raised fears about the 2016 Olympic Games in Brazil, a country with so little history of terrorism that the president has played down the chance of an attack and legislators have long resisted bills to make it a crime.

Diplomats in Brasilia say Western governments are worried about the safety of their athletes and tourists at the games because they believe many Brazilian authorities are complacent, taking too much comfort in Brazil's historical standing as a non-aligned, multicultural nation free of enemies.

President Dilma Rousseff last week brushed off the possibility of an incident in Brazil like the attack by the Islamic State group in the French capital. "We are very far away," she said after a summit in Turkey.