Kevin Rudd and Barack Obama had phone conversation over Syria crisis The PM has posted a hero gram to himself "@KRuddMP: Spoke to President Obama" instagram.com" Source: News Limited KEVIN Rudd has revealed he had a telephone conversation with US President Barack Obama this morning over the Syria crisis. And it comes as the Greens say a military strike on Syria would be a mistake without knowing the full facts of an alleged chemical attack. Speaking at the Lowy Institute in Sydney this morning the Prime Minister said the crisis in Syria was of "historical proportions" and that the global community would be judged on how it responded to current events just like Rwanda in 1994. US ready to strike over gas attack Syria: 'Not too late to trace nerve gas' This would not be without consequence and President Obama is considering his options. But Australian Greens leader Christine Milne says Australia needs to play a key role in an investigation when it assumes presidency of the UN security council next week. "Let's get to the facts of it first and find out who is accountable and hold them accountable," she told reporters near Hobart. Let's not do anything preemptive. The US reportedly has several warship in the area and is considering options. The Australian dollar is falling as the US government prepares to launch a missile or air attack on Syria. At 12pm (AEST) the Australian currency was trading at 89.84 US cents, down from 90.38 cents yesterday.