The main reason for the increase seems to be a dust-up over the description of the Takeshima islets in the Education, Science and Technology Ministry's manual.
(外務省ホームページの閲覧数が）増えた主な原因は、文部科学省の新学習要領解説書での竹島表記を巡る最近の騒動のようだ。
◆dust-up ： 騒動、けんか、口論
◆dust-up
OXFORDから a fight or quarrel
LONGMANから A dust-up is a quarrel that often involves some fighting.[INFORMAL]
ex.) He's now facing suspension after a dust-up with the referee.