A Japanese pediatrician has launched a website in Ukrainian and three other languages to help caregivers and children fleeing Russia's invasion of Ukraine deal with the challenges they face in places of shelter such as limited water or warmth.

The site, which is in Ukrainian, Polish, English and Japanese, compiles information on topics including children's mental health care, treating diarrhea, baby hygiene, and preventing dehydration and infectious diseases.

Masahiko Sakamoto, the 44-year-old pediatrician from Saku Central Hospital Advanced Care Center in the central Japan prefecture of Nagano, said he could not view the situation in Ukraine as something that was just happening in a foreign land.