The two men, dual citizens of both countries, were accused of being part of a plot to undermine aid to Ukraine by trying to blow up military infrastructure.
The heavy rains also flooded parts of Dubai International Airport, causing scores of flight delays and cancellations, and brought other cities in the U.A.E. to a standstill.
The Homeland Movement came third in parliamentary elections, setting itself up as a possible partner for the ruling conservatives, who failed to achieve a majority.
The election is a giant undertaking that requires millions of poll workers, voting machines and security forces to cover deserts, mountains, forests and megacities.