For sure, the U.S. has maintained the approach of having ready access to Russian fertilizer for importation into their market. North America in total is a net importer of nitrogen and phosphate products. That includes the U.S. and us. It's been like that for quite a long period of time. We're a net exporter of potash products, so there are no concerns about supply security in that case.
What we've seen is that the U.S. has significantly increased their imports of Russian fertilizer since the arrival of the war in Ukraine. They've more than doubled the amount of fertilizer imported from Russia into their country. They've also increased the number of exports, so there's a lot of trade and commerce going back and forth with no restrictions on full and fair trade.
In our case, on the impact on producers in eastern Canada, we can estimate that there has been an increase in cost to producers as a result of limited access from all regions across the world. However, the bigger risk is an interruption in supply from any other available region of the world. That would put us at significant risk, because the number of options is quite limited. We can think of the conflict in the Middle East as an example that would be a high-risk scenario.