Um... "just remove the landmines" isn't exactly that simple. It's difficult, slow, dangerous, and expensive work and resources aren't exactly unlimited. https:

Um... "just remove the landmines" isn't exactly that simple. It's difficult, slow, dangerous, and expensive work and resources aren't exactly unlimited. https://en.wikipedia.org/wiki/Demining https://en.wikipedia.org/wiki/Demining >As of 2017, antipersonnel mines are known to contaminate 61 states and suspected in another 10. The most heavily contaminated (with more than 100 square kilometres of minefield each) are Afghanistan, Angola, Azerbaijan, Bosnia and Herzegovina, Cambodia, Chad, Iraq, Thailand and Turkey. >A 2003 RAND Corporation report estimated that there are 45–50 million mines and 100,000 are cleared each year, so at present rates it would take about 500 years to clear them all. Another 1.9 million (19 more years of clearance) are added each year. >Demining is a dangerous occupation. If a mine is prodded too hard or it is not detected, the deminer can suffer injury or death. The large number of false positives from metal detectors can make deminers tired and careless. According to one report, there is one such incident for every 1000–2000 mines cleared. 35 percent of the accidents occur during mine excavation and 24 percent result from missed mines.