During the negotiations, however, it became clear that there was fundamental disagreement between the two sides on two major issues: how cruise missiles were to be addressed, and whether the new Soviet bomber known to the United States as the Backfire bomber would be considered a heavy bomber and therefore counted in the 2,400 aggregate. While there was disagreement on other issues such as [[MIRV]] verification provisions, restrictions on new systems, and missile throw-weight ceilings, progress was made in these areas. However, the issues of [[cruise missiles]] and Backfire remained unresolved. | During the negotiations, however, it became clear that there was fundamental disagreement between the two sides on two major issues: how cruise missiles were to be addressed, and whether the new Soviet bomber known to the United States as the Backfire bomber would be considered a heavy bomber and therefore counted in the 2,400 aggregate. While there was disagreement on other issues such as [[MIRV]] verification provisions, restrictions on new systems, and missile throw-weight ceilings, progress was made in these areas. However, the issues of [[cruise missiles]] and Backfire remained unresolved. |