Abu Dhabi Police are conducting a two-day drill in the Barakah Plant area, involving sirens and military vehicles.
Dubai government employees will be granted paid leave of up to six days to enable them and their families to visit the mega event.
His Highness Sheikh Hamdan bin Mohammed bin Rashid Al Maktoum, Dubai's Crown Prince and Chairman of the Executive Council has toured the Expo 2020 site, days ahead of its opening.
A strong earthquake measuring 5.8 shook the island of Crete in southern Greece on Monday, the Athens Geodynamic Institute said, sending people out of their homes and buildings.
Up to 90 per cent of British fuel stations ran dry across major English cities on Monday after panic buying deepened a supply chain crisis triggered by a shortage of truckers that retailers are warning could batter the world's fifth-largest economy.
Germany's Social Democrats narrowly won Sunday's national election, projected results showed, and claimed a "clear mandate" to lead a government for the first time since 2005 and to end 16 years of conservative-led rule under Angela Merkel.