Political from day one. The IPCC is an outshoot from the Hadley Centre in the UK.
After a crippling coal miner strike, Margaret Thatcher wanted to de-fang the miners' union, and get the UK free of coal. She established the Hadley Centre to prove that GW was a crisis, caused by CO2, that coal was a cause, which would allow her to begin developing nuclear power or natural gas.
The goal of the IPCC has always been to support the MGW argument, and has NEVER questioned WHETHER it is a real problem. Since Algore's powerpoint movie, all funding has gone to furthering the MGW myth.