Four years after Donald Trump's election reframed how many nations interacted with the United States, the way that the world's foremost superpower moves forward after its presidential election stands to impact many geopolitical pressure points — whether the victor turns out to be Trump or his Democratic challenger, former Vice President Joe Biden.

From Iran to Cuba, from China to Israel, American involvement and influence on the international stage has evolved sharply since Trump took office in 2017. He swept away agreements with some nations, alienated longstanding allies and pulled out of multilateral obligations that he said didn't serve the interests of the United States.

One candidate for the White House is crisscrossing the United States; the other is at home, preparing for the final debate. 

Here is a look at what's happening on the American campaign trail on Tuesday, two weeks before Election Day on November 3:

Brandishing a sword and dancing to traditional music on his first visit to Saudi Arabia soon after taking office, Donald Trump launched a dramatic relationship revamp that freed the hands of the Gulf monarchies.

In a hundred days of sweeping and at times violent protests, thousands of Bulgarians have tightened the screws on the political elite -- but this, they say, is only the beginning.

Even for crisis-torn Lebanon, this has been a horrible 12 months. A deep economic crisis sparked huge street protests and then a massive explosion in August devastated the capital Beirut.

By Melkar el Khoury (Lebanese writer & activist)

- Federalism: A Constitutional Model of Governance -

A major supplier of arms to Azerbaijan, Israel has come under diplomatic fire from Armenia over the struggle between the Caucasus neighbors in disputed Nagorno-Karabakh.

The marriage of convenience between Vladimir Putin and Recep Tayyip Erdogan has confounded sceptics by withstanding Russian and Turkish rivalries in Syria and Libya.

Sheikh Nawaf al-Ahmed Al-Sabah, appointed Kuwait's ruler after the death of his half-brother, is an elder statesman who has held high office for decades but earned a reputation for being modest and low-key.

Anti-government protests that erupted in Iraq a year ago lasted several months before being crushed, at a cost of 560 lives and 30,000 injured.