Is the only way to give a professional speech is to stand behind a lectern

Absolutely not.

There are many ways to give a professional speech, and not necessarily behind a lectern. Professionals speak ( some more than others). Lawyers use verbal communication in a jury, defending a case and they are not behind a lectern. Medical advice is given too in a class, at university. In fact, politicians give professional speeches everywhere, when they open up a new facility, or at campaigns.

Professionals contribute specialized, technical knowledge to which  citizens would not otherwise have access, and they study oratory techiques to make speeches better.

jordan, an arab nation on the east bank of the jordan river, is defined by ancient monuments, nature reserves and seaside resorts. it’s home to the famed archaeological site of petra, the nabatean capital dating to around 300 b.c. set in a narrow valley with tombs, temples and monuments carved into the surrounding pinksandstone cliffs, petra earns its nickname, the "rose city."

travelers to  jordan  should avoid the country's border with syria and iraq given the continued threat of cross-border attacks.