Each Friday, I look at what the presidential contenders are saying about foreign policy. This Week: Many Republicans have lost faith in their party’s traditional embrace of internationalism.

Migration will rise this summer, inflaming U.S. politics; Brazil’s risky bet on soy.

Atmospheric rivers are gaining in intensity across California and the western United States. Communities need to adapt to the havoc wrought by this weather phenomenon.

Beijing has tightened its grip on Hong Kong in recent years, dimming hopes that the financial center will ever become a full democracy.

The alliance is bolstering its military deterrent in Europe amid Russia’s invasion of Ukraine and has expanded to include Finland and Sweden.

The advanced U.S. fighter aircraft will mark a significant upgrade to Ukraine’s air force, but their impact on the war with Russia will hinge on several factors.