港股光通信概念集體下跌，長飛光纖光纜(06869.HK)跌超9%，舜宇光學科技(02382.HK)跌超8%，匯聚科技(01729.HK)跌超7%，劍橋科技(06166.HK)跌近6%，曦智科技-P(01879.HK)跌超4%。

KCNA reported on June 26 that N. Korea leader Kim Jong Un observed weapons tests on June 25 focused on artillery and missile modernization. Tests included an upgraded 240mm 24-tube rocket launcher with automated fire control and indigenous precision guidance, range extended to 90 km; a tactical ballistic missile fitted with a "special mission" warhead said to be intended for lethal, destructive strikes on enemy airports, ports and power facilities; and a 155mm self-propelled gun trialing an extended-range projectile reaching 65 km. Kim said the tests demonstrate major technical progress in automation, range and ultra-precision.

California, citing concern the rules could be withdrawn, is seeking a court order to block the U.S. Environmental Protection Agency (EPA) from submitting vehicle emissions rules to Congress.