Chris Holski is filling in for Kristy Cameron today. And it was another bad day on Wall Street, as global markets plunged for a third straight session. Despite the grim statistics, U.S. President Donald Trump says he won’t back down on his latest batch of tariffs, which have irritated global trade. We dig deeper with Don Drummond, a Canadian economist at Queens University and a former Chief Economist at TD Bank. Here at home, we are finding out more information about the 31-year-old suspect that was detained at Parliament Hill over the weekend. CTV’s Josh Marano delivers the details in Hour 1. But first, we bring you up to speed on today’s top headlines.

<p>Chris Holski is filling in for Kristy Cameron today. And it was another bad day on Wall Street, as global markets plunged for a third straight session. Despite the grim statistics, U.S. President Donald Trump says he won&rsquo;t back down on his latest batch of tariffs, which have irritated global trade. We dig deeper with Don Drummond, a Canadian economist at Queens University and a former Chief Economist at TD Bank. Here at home, we are finding out more information about the 31-year-old suspect that was detained at Parliament Hill over the weekend. CTV&rsquo;s Josh Marano delivers the details in Hour 1. But first, we bring you up to speed on today&rsquo;s top headlines.</p>