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One of the fault lines in the Republican Party revealed at the 2016 GOP Convention this week is foreign policy. Republican nominee Donald Trump wrangled a change to the Republican Party's platform that removed a call to arm government forces in Ukraine fighting Russian-backed rebels.

This is an about face for the Republican Party, which has been asking the Obama Administration to send weapons to Ukraine, but it is consistent with Trump's softer line on Russia. Trump's chief of staff, Paul Manafort, also has a long history lobbying for Russian interests.

The change highlights what really seems to matter in a Trump foreign policy — keeping American jobs at home and asking allies to pay more for American military support.  

It is a kind of realism and a vision of a more limited American role in the world that seems familiar to Steve Clemons, editor-at-large for The Atlantic.

As Clemons points out, President Barack Obama has also resisted calls for foreign intervention from the right and the left. Takeaway Washington Correspondent Todd Zwillich spoke with Clemens at the Republican National Convention in Cleveland about what we know of the ideas behind Trump's view of foreign affairs.