Does Islam permit Muslims to lie?

Does Islam permit Muslims to lie?

Muslim scholars teach that Muslims should generally be truthful to each other... unless the purpose of lying is to "smooth over differences" or "gain the upper-hand over an enemy."

There are several forms of lying to non-believers that are permitted under certain circumstances, the best known being taqiyya (the Shia name). These circumstances are typically those that advance the cause of Islam - in some cases by gaining the trust of non-believers in order to draw out their vulnerability