Coming up this week on Frost over the World:
Syria has denied the accusations and condemned Wednesday's blast, but what does this latest killing mean for upcoming presidential elections on Tuesday?
Watch this Lebanon segment on Youtube.
Kosovo
The move follows a warning earlier this week from Russia's foreign minister, Sergei Lavrov, that any unilateral declaration of independence by Kosovo could lead to further instability in Europe.
Kosovo has said that if talks on its status are not resolved by December 10 it will declare independence. Jeremic said that although he considered it dangerous for any party in the negotiations on Kosovo's final status to take unilateral action, Serbia "is not going to use force".
World Peace Day
With September 21 marking the United Nations International Day of Peace, Sir David talks to Jeremy Gilley, creator of the day itself, about what it means for the future.
Watch the Kosovo and World Peace Day segment on Youtube.
Darfur
Mary Robinson, a former president of Ireland and a UN high commissioner for human rights, talks about the crisis in Darfur and what steps must be taken to prevent further civilian deaths.
Watch the Darfur segment on Youtube.