Overview: What are the options for western intervention over Libya? Should we arm the rebels? The idea is being considered by the White House but how realistic is it and how tricky politically? Tonight we'll look at the options for western governments and their possible outcomes. We are hoping to speak to the former Republican presidential candidate Senator John McCain to get his views. We will also consider what is behind these questions in the Middle East and North Africa with the American linguist and philosopher Noam Chomsky. How do the recent events affect Chomsky's world view? You can see a preview of the interview here. The government has been criticised over its handling of the crisis in Libya, most notably over getting Briton's out. But there have been other perceived gaffes too raising questions over the government's competence. Remember the U turn over the sale of forests? We'll get the latest take on the how well the government is doing with its presentation skills from some politically savvy guests. And we'll be asking - why is sectarianism still so strong in Glasgow? A summit was held in Edinburgh today chaired by First Minister Alex Salmond following last week's Old Firm Scottish Cup replay which saw three red cards, several touch-line and tunnel confrontations and 34 arrests inside Celtic Park. Why has antipathy between Protestants and Catholics survived for so long in the city?