collected over the last 48 hours by satelitte company maxar technologies have shown additional military buildup on ukraine's eastern border, stretching to ukraine's south in russian—annexed crimea(, as well as near ukraine's northern border with belarus lets get more on russia's build—up with michael sheldon — research associate at the atlantic council's digital foresnic lab — on open source monitoring group. can you talk is for your methodology, and as as an illustration we can see how you have used something from russian troops on tiktok near kursk. ~ , ., , russian troops on tiktok near kursk. , ., russian troops on tiktok near kursk. , . ,,. kursk. we use open sources such as social media _ kursk. we use open sources such as social media and _ kursk. we use open sources such as social media and a _ kursk. we use open sources such as social media and a lot - kursk. we use open sources such as social media and a lot of - kursk. we use open sources such as social media and a lot of it - as social media and a lot of it from tiktok and instagram where we seek to verify the footage through a process of geolocation and we use clues from the footage or the user profile to narrow down the area