Mexico's President Felipe Calderon has welcomed world leaders at the G20 summit in the hills above the resort of San Jose del Cabo.

The summit has been dominated by a spiraling European debt crisis that is spooking markets and paralysing growth.

While heads of the 20 biggest economies discussed the eurozone crisis, addressing the plight of some of the world’s poorest people, some just just metres away from the conference centre, was not on the agenda.