IOWA CITY, JAN. 19 -- Senate Minority Leader Robert J. Dole (R-Kan.), seeking to highlight a substantive difference with Vice President Bush, said today he would insist on including conventional force reductions in any future arms control negotiations or summits with the Soviet Union.

Dole, in a speech on foreign policy at the University of Iowa here, also said he would not accept a treaty to limit strategic nuclear weapons -- now being negotiated in Geneva -- without improvement in the United States' technical capabilities to verify such an agreement, or if the treaty left an unsatisfactory balance in the remaining weapons.

The senator, engaged in an increasingly tight battle with Bush for the Republican presidential nomination as the first primaries and caucuses approach, sought today to lay down more strict criteria than Bush has for the next arms control agreement. His speech here was also designed to showcase his support for the Intermediate-Range Nuclear Forces (INF) Treaty after Bush capitalized on Dole's initial hesitation to give the treaty an unqualified blessing. Dole also made a point of coming to a college campus, where polls have shown that younger voters are more inclined to support Bush.

"Ronald Reagan's arms control strategy has yielded a milestone arms control agreement," Dole said of the INF pact eliminating medium- and shorter-range missiles from Europe. "I've done my homework on this treaty," he added. "And because I have I can say to you categorically, this is a good treaty."

Dole also took a veiled jab at Bush on the Iran arms sales issue, following Bush's statements last week saying there are moderate elements in Iran and the United States was right in trying to reach out to them. "There's just no excuse for the disastrous arms sales to the Ayatollah {Ruhollah Khomeini, the Iranian leader} or to anyone else in Iran," he said, "Those sales knocked into a cocked hat the credibility of the formal U.S. policy of no concessions to terrorists."

On the arms control issue, Bush has frequently called attention to the INF Treaty in speeches and said he would like to move ahead on strategic arms as well as limiting chemical and biological weapons and redressing the Soviet conventional-force imbalance in Europe.

Bush has generally rejected "linkage," a concept of insisting that progress in one area of arms control or U.S.-Soviet relations should be linked to that in another area. The vice president has said he disagrees with those who would tie these matters together.

Dole indicated he supports linking several areas of arms control negotiations. For example, he said, "underscoring my concerns" on strategic arms reductions "is the overwhelming superiority of Soviet conventional forces -- an imbalance which must be dealt with in any further negotiations or future summits with the Soviets."

Dole also said a strategic arms agreement would be unacceptable without "airtight" verification provisions. Bush has also called for tight verification. Dole added that the technical means for verification must be improved.

In addition, Dole said, "we also have to be absolutely sure that the agreement leaves us with a credible nuclear deterrent. Any START {strategic arms reduction talks} agreement from the ongoing Geneva talks must meet this vital standard . . . . "

Dole said reductions in weapons are not enough. "Indeed, if the residual forces on each side are misaligned, if ours are left more vulnerable to attack by theirs, or if we fail to adequately fund programs which insure the survivability and utility of our deterrent forces -- under any of those circumstances, the effectiveness of our deterrence would be reduced, even though the Soviets would have fewer weapons," he said.

"And under those circumstances -- under those circumstances it would be better we have no START agreement at all," he said.