NATO Secretary General Jens Stoltenberg has ruled out deploying ground-based nuclear missiles to Europe. <br />''<br />''<br />''At a press conference on Thursday in Warsaw, Poland Stoltenberg said the 29-nation alliance had already started planning for a world without the Intermediate-Range Nuclear Forces Treaty (INF). <br />''<br />''<br />''The United States decision to suspend participation in the INF has prompted concerns of its European allies. <br />''<br />''<br />''It formally suspended its obligations under the 1987 INF Treaty on February 2 and triggered the six-month withdrawal process, citing alleged Moscow's violation of the deal. <br />''<br />''<br />''UN Secretary-General Antonio Guterres had warned that Europe would be most vulnerable to any negative consequences of the potential collapse of the deal. <br />''<br />''<br />''<span style="color: #222222;">The agreement bans all ground-launched missiles, conventional or nuclear, with ranges of 310 to 3,400 miles. </span><br />