The news that the key ally in Pakistan's coalition government has pulled out of the already fragile coalition, comes as a surprise to exactly ... no one.
In quitting government the Muttahida Qaumi Movement, or the MQM, is playing a game that is regular feature of Pakistani politics.
It's game of brinkmanship, when a political party uses its leverage to get what it wants. Normally it picks a popular issue and uses that as an excuse to put pressure on the government. In this case it's fuel prices.
We have seen this before.
After the election in 2008, this was a government built on uneasy alliances. Making up the government were the big victors - the Pakistan People's Party. Then came the smaller parties: the Pakistan Muslim League-N led by former prime minister Nawaz Sharif, a loose affiliation of religious parties, and the MQM.