Ukraine President Volodymyr Zelensky says he has returned Poland's highest honour after his Polish counterpart Karol Nawrocki said he was stripping him of the award. The Polish Order of the White Eagle was bestowed on Zelensky in 2023 by then-President Andrzej Duda. But Kyiv caused outrage last month after renaming a Ukrainian army unit after a group of controversial World War Two fighters called the Ukrainian Insurgent Army (UPA). Three senior Ukrainian officials have also said they are returning awards bestowed by Poland, to show solidarity with their president. Many in Ukraine regard the UPA, which existed in the 1940s and 1950s, as heroes who fought for Ukrainian independence against the Soviet Red Army, Nazi Germany and Polish authorities.

Inthis section, we describe the details ofMiniRTSEnvironment and human dataset. The data do not contain any personally identifiable information or offensivecontent. Figure 1: MiniRTS [2]implements the rockpaper-scissors attack graph, each army type has some units it is effective against and vulnerableto. "swordman","spearman"and"cavalry"allare effectiveagainst"archer" Figure 2: Building units can produce different army units using resources. Resource Units: Resource units are stationary and neutral.

In this section, we describe the details of MiniRTS Environment and human dataset. "spearman" but is retrained by "cavarly". "swordman", "spearman" and "cavalry" all are Figure 2: Building units can produce different army units using resources. "workshop" can produce "archer", "dragon" and "catapult" while other Resource Units: Resource units are stationary and neutral. Resource units cannot be constructed by anyone and are created at the beginning of a game. Building Units: MiniRTS supports 6 different building unit types.

The U.S. Army recently awarded QinetiQ North America a contract worth up to $152 million for special robots that are light enough to be carried in a backpack into combat. The Common Robotic System Individual, or CRS (I), is the Army's first "small-sized" robotic program of record, according to a recent press release from the service's Maneuver Capability Development Integration Directorate at Fort Benning, Georgia. "CRS (I) is a remotely operated, highly mobile, unmanned ground vehicle that is light enough for a dismounted soldier to carry in a backpack," the release states. These new robots, which the Army plans to begin fielding in fiscal 2020, "will provide the dismounted soldier with enhanced situational awareness, force protection and increased standoff capability from enemy threats," the release adds. The potential value of the total program could be $429 million over seven years for the delivery of more than 3,000 ground robots, according to a May 22, 2018, QinetiQ North America press release announcing that the company had been chosen as one of two finalists in the program.

In my last column, I touched on the fact that much of the government was still shutdown due to the impasse over border wall funding. Truly, I thought that it would all be resolved by now. But with no end in sight, I wanted to talk about using technology--specifically artificial intelligence and drones--to create an impenetrable defense along our borders that would be mostly invisible and yet highly effective. Much of the technology needed to support such an endeavor already exists today, and such a system might just be acceptable to both sides of the great wall debate. First off, it's important to mention that walls by themselves have never been effective at stopping humans from moving through, over, under or around them.