'To be on ice' is an expression used to talk about decisions or plans that are not going to be dealt with for the moment.
The Middle East peace process may be on ice but it's still a priority for many Western leaders.
I've had to put my trip to the Caribbean on ice as I need the money to get my car repaired.
Don't confuse it with
Another phrase is 'to be on thin ice', which means to be in a difficult situation.
John opened a luxury goods shop in 2008. He was on thin ice when the recession started.
According to the Guinness Book of Records the lowest temperature recorded in a place where there is a permanent population is -68°C. The temperature was recorded in Russia in the Siberian village of Oymyakon in 1993. It's the coldest ever recorded outside Antarctica.