My conversation with Dr. Walter Block about abortion and natural rights, which is one of the trickiest issues in any political philosophy, libertarianism included. He's the creator of a theory called "evictionism," which tries to take a middle ground between pro-life and pro-choice positions.
In my analysis, it's a reasonable compromise. I cannot think of any principled objections from the pro-choice side, and though a pro-lifer might have objections, the core of Block's argument is pro-life at heart and in the long run could result in the universal protection of pre-birth humans.