Description:Car and roadside bombs kill at least 43 people across Iraq, in the country's deadliest day in nearly a month. At least 16 near-simultaneous explosions struck cities and towns across Iraq on Tuesday, despite a massive security clampdown ahead of next week's Arab League summit in Baghdad. The summit is seen by many as the country's debut on the regional stage following the withdrawal of US troops in December of last year.(1:07)