This has been Donald Trump’s first week as president of the United States. He has signed a series of executive orders, including one reversing policy on two controversial oil pipelines. Meanwhile, over in Canada, Prime Minister Justin Trudeau has validated two pipeline projects there. And while some native Canadians oppose the plans, others say they need oil money to live. Our correspondent in Canada went to meet them. But first, we take a closer look at Donald Trump's quick work in pushing through on his campaign promises. As he confirmed his intention to build a wall at the Mexican border, we see how Mexico is trying to figure out what exactly that means, and what consequences it will have.

Finally, we look back at the peace agreement between the Colombian government and FARC rebels that has ended a half-century of conflict. Now, all FARC rebel fighters are due to turn over their weapons to monitors from the UN. We see how they are determined to continue their struggle, but on a political terrain.