The Foreign Secretary William Hague has warned that the UK does not rule out any options if it in the interests of saving Syrian lives.
He said that Syrian president Bashar al Assad should not doubt Britain's resolve to react if he decides to use chemical weapons.
More top news
Drink lots of water, stay out of the sun during the middle of the day, and take particular care of vulnerable people.
The 81-year-old has disappeared from his home on the Spanish island on the hottest day of the year so far.
A video shows firefighters hosing off four bulls while they rescued a cow that had become trapped between two trees.