Why do they now call it "climate change" instead of "global warming", because we have entered a cooling phase?

Records show that there has been no increase in global temperatures since 1998. Global temperatures has leveled off, despite the fact that the atmospheric levels of CO2 have continued to increased. Antarctic Ice is at its highest recorded levels. And Ice in the Arctic and in Greenland are both increasing. So why are all the politicians getting on the "climate change" bandwagon?