The biggest international incident, on the tip of all democratic voters' tongues, was Israel's continued genocide in Gaza. For that specific issue, there was virtually no daylight between the Republican and Democratic line.

I would argue that the Democrats could have created a separation between themselves and the other side by saying they would stop selling arms to genocidiers, and thereby secure the crucial anti-genocide vote; anecdotally, many of these folks sat out the election, or wrote in another candidate instead of voting for one of two sides who would let massacres of civilians continue.