To date, Israel has maintained that substantive discussions can only be conducted in direct negotiations between Israeli and Palestinian officials.

CENTERFORSECURITYPOLICY: Why Obama is waging war on Israel

With substantive discussions about gun control, religious tolerance and parenting to a fun guest appearance by Gordon Ramsey to a pointless conversation about celebrities on Twitter, HuffPost Live entered the world yesterday.

FORBES: HuffPost Live Day 1: Courageous, flawed and promising

In other words, people who had substantive discussions with their doctor about their end-of-life preferences were far more likely to die at peace and in control of their situation, and to spare their family anguish.

NEWYORKER: Letting Go

Our goal in any of this is to create an atmosphere of trust and open dialogue to bring these two sides together so that the discussions can be substantive in moving towards comprehensive Middle Eastern peace.

WHITEHOUSE: Press Briefing

Despite their different approaches to the crisis, Mr Cameron said the two had made "real progress" in discussions he described as "substantive, purposeful and frank".

BBC: Cameron and Putin discuss Syria conflict at Sochi talks