biden and russian president vladimir putin in the near future. the u.s. saying such a meeting could happen if it were both necessary and productive. fred pleitgen, cnn, switzerland. we have more from nic robertson. good to have you with us. after a 90-minute meeting, no major development, no end to this standoff. the u.s. and russia agreeing to continue dialogue and diplomacy. >> reporter: yeah, and that was the aim of secretary blinken when he went into the meeting. he said he wanted to figure out if russia was still committed to the diplomatic track, and russia pushed and got what it wanted which was their written response. it's been -- to its demands, security proposal as it calls it. that it placed with the united states back in the middle of december. it's been pushing for this written response. so this is an engagement in diplomacy, although the secretary of state's characterizing this not as