PARIS — France will reinstate controls on its borders, normally open to other countries in Europe’s free-travel zone, for the period around a major U.N. climate conference in Paris, the interior minister said Friday. France submitted a note to European Union authorities last month announcing border checks at all airports with international flights and at 131 land crossings with Belgium, Germany, Spain, Italy, Switzerland and Luxembourg, according to an EU document. France is still reeling from deadly attacks by Islamic extremists in January on satirical newspaper Charlie Hebdo and a kosher grocery. [...] the country has seen several other smaller attacks or attempts, including when a heavily armed Islamic radical was prevented by young American passengers from attacking a high-speed train in August.